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Abstract-We describe an extension of the linear embedding via Green's operators (LEGO) method to the solution of finite antenna arrays comprised of disconnected elements in a homogeneous medium. The ultimate goal is the calculation of the admittance matrix and the radiation pattern of the array. As the basic idea is the inclusion of an array element inside an electromagnetic "brick," the first step towards the solution consists of the definition and numerical calculation of hybrid scattering-admittance operators which extend the notion of scattering operators of equivalent currents introduced in the past. Next, the bricks are combined by means of the usual transfer operators to account for the multiple scattering between the bricks. Finally, LEGO is complemented with the eigencurrents expansion so as to reduce the size of the problem. With the aid of a numerical example we discuss the validation of the approach and the scaling of the total CPU time as a function of the elements forming the array.

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